Non-metallic buckle



FIG. 1 is a perspective view of the non-metallic buckle with the tongue positioned on the buckle portion showing my new design;

FIG. 2 is a another perspective view with the tongue extended from the buckle portion thereof,

FIG. 3 is a cut-away view exploded view along line 3 seen in FIG. 2 thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a side view thereof.

The broken lines in FIG. 3 depict the order of assembly of the exploded view and form no part of the claimed design. 

The ornamental design for a non-metallic buckle, as shown and described. 